<template>
  <header class="header">
    <!-- 头部的第一行 -->
    <div class="top">
      <div class="container">
        <div class="loginList">
          <p>尚品汇欢迎您！</p>
          <!-- 没有用户名：未登录 -->
          <p v-if="!this.$store.state.user.userInfo.name">
            <span>请 </span>
            <!-- 声明式导航：router-link务必要有to属性 -->
            <router-link to="/login" style="color:#ea4a36 ;font-weight: bold">登录</router-link>
            <router-link class="register" to="/register">免费注册</router-link>
          </p>
          <!-- 登录了 -->
          <p v-else>
            <a style="color: #ea4a36;font-weight: bold">{{ this.$store.state.user.userInfo.name }}</a>
            <a class="register" @click="logout">退出登录</a>
          </p>
        </div>
        <div class="typeList">
          <router-link to="/trade">我的订单</router-link>
          <router-link to="/shopcart">我的购物车</router-link>
          <router-link to="/center">我的尚品汇</router-link>
          <a href="###">尚品汇会员</a>
          <a href="###">企业采购</a>
          <router-link to="/carouselbaseelementplus">关注尚品汇</router-link>
          <router-link to="/xiangying">合作招商</router-link>
          <router-link to="/backendbaseecharts">商家后台</router-link>
          <a @click="openScreen">全屏</a>
        </div>
      </div>
    </div>
    <!--头部第二行 搜索区域-->
    <div class="bottom">
      <h1 class="logoArea">
        <!-- router-link组件本省就是一个a标签 -->
        <router-link to="/home" class="logo">
          <img src="./images/logo.png" alt=""/>
        </router-link>
      </h1>
      <div class="searchArea">
        <form action="###" class="searchForm">
          <input
              type="text"
              id="autocomplete"
              class="input-error input-xxlarge"
              v-model="keyword"
              autocomplete="off"
          />
          <button
              class="sui-btn btn-xlarge btn-danger"
              type="button"
              @click="goSearch"
          >
            搜索
          </button>
        </form>
      </div>
    </div>
  </header>
</template>

<script>
import screenfull from "screenfull";
import emitter from "../../utils/bus";
// import {mapState} from "vuex/dist/vuex.mjs";

export default {
  name: "Header",
  data: () => ({
    keyword: '',
    // isFullscreen: false,
  }),
  methods: {
    openScreen() {
      screenfull.toggle()
    },
    goSearch() {
      this.$router.push({name: 'Search', params: {keyword: this.keyword}, query: {k: this.keyword.toUpperCase()}})
      // this.keyword=''
    },
    // 退出登陆
    logout() {
      // 退出登陆，需要发请求，通知服务器退出登陆【清除token】
      // this.$store.dispatch('user/userLogout')
      localStorage.removeItem("TOKEN")
      window.location.reload()
    },
  },
  mounted() {
    // header组件挂载后，立刻从localStorage中读取用户信息，进行展示，防止页面刷新后用户信息消失
    this.$store.dispatch('user/getUserInfo')
    // 挂载清除搜索框事件
    emitter.on('clear', () => {
      this.keyword = ''
      console.log('emitter起效了，执行清除了！！！')
    })
  },
  // 监听路由信息的变化
  watch: {
    // $route: {
    //   handler() {
    //     this.keyword = ''
    //   }
    // }
  }
}
</script>

<style scoped lang="less">

.header {
  a:hover {
    cursor: pointer
  }

  & > .top {
    background-color: #eaeaea;
    height: 30px;
    line-height: 30px;

    .container {
      width: 1200px;
      margin: 0 auto;
      overflow: hidden;

      .loginList {
        float: left;

        p {
          float: left;
          margin-right: 10px;

          .register {
            border-left: 1px solid #b3aeae;
            padding: 0 5px;
            margin-left: 5px;
          }
        }
      }

      .typeList {
        float: right;

        a {
          padding: 0 10px;

          & + a {
            border-left: 1px solid #b3aeae;
          }
        }

      }

    }
  }

  & > .bottom {
    width: 1200px;
    margin: 0 auto;
    overflow: hidden;

    .logoArea {
      float: left;

      .logo {
        img {
          width: 175px;
          margin: 25px 45px;
        }
      }
    }

    .searchArea {
      float: right;
      margin-top: 35px;

      .searchForm {
        overflow: hidden;

        input {
          box-sizing: border-box;
          width: 490px;
          height: 32px;
          padding: 0px 4px;
          border: 2px solid #ea4a36;
          float: left;

          &:focus {
            outline: none;
          }
        }

        button {
          height: 32px;
          width: 68px;
          background-color: #ea4a36;
          border: none;
          color: #fff;
          float: left;
          cursor: pointer;

          &:focus {
            outline: none;
          }
        }
      }
    }
  }
}
</style>